What is CVE-2026-59679?

CVE-2026-59679 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. fs_read_glyphs() heap OOB read/write via encoding array index mismatch in libXfont2

Which CVE IDs does CVE-2026-59679 cover?

CVE-2026-59679 covers the following CVE IDs: CVE-2026-59679. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-59679?

CVE-2026-59679 has a CVSS v3 base score of 9.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-59679?

CVE-2026-59679 affects 1 product, including: azl3 libXfont2 2.0.8-1 on Azure Linux 3.0.

CVE-2026-59679HighCVSS 9.0

fs_read_glyphs() heap OOB read/write via encoding array index mismatch in libXfont2

Vendor

Microsoft Security Response Center (MSRC)

Published

September 17, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-59679 →

🎯 Affected products1

azl3 libXfont2 2.0.8-1 on Azure Linux 3.0

✅ Remediation

Security Update — fixed build 2.0.9-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59679
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade